Package com.powsybl.timeseries

Class CompressedDoubleDataChunk

java.lang.Object

com.powsybl.timeseries.AbstractCompressedDataChunk

com.powsybl.timeseries.CompressedDoubleDataChunk

All Implemented Interfaces:

DataChunk<DoublePoint,DoubleDataChunk>, DoubleDataChunk

public class CompressedDoubleDataChunk
extends AbstractCompressedDataChunk
implements DoubleDataChunk

RLE (Run-Length encoding) compressed double data chunk.

Author:

Geoffroy Jamgotchian <geoffroy.jamgotchian at rte-france.com>

Nested Class Summary

Nested classes/interfaces inherited from interface com.powsybl.timeseries.DataChunk

DataChunk.JsonParsingContext, DataChunk.Split<P extends AbstractPoint,A extends DataChunk<P,A>>

Field Summary

Fields inherited from class com.powsybl.timeseries.AbstractCompressedDataChunk

offset, stepLengths, uncompressedLength

Constructor Summary

Constructors

Constructor	Description
CompressedDoubleDataChunk(int offset, int uncompressedLength, double[] stepValues, int[] stepLengths)

Method Summary

Modifier and Type	Method	Description
DoubleDataChunk	append(DoubleDataChunk otherChunk)	Append the chunk with the one given in argument, and return the result.
boolean	equals(Object obj)
void	fillBuffer(BigDoubleBuffer buffer, long timeSeriesOffset)
void	fillBuffer(DoubleBuffer buffer, int timeSeriesOffset)
TimeSeriesDataType	getDataType()	Get data type.
int	getEstimatedSize()	Get estimated size in bytes.
double[]	getStepValues()
protected int	getUncompressedEstimatedSize()
int	hashCode()
Iterator<DoublePoint>	iterator(TimeSeriesIndex index)	Get a point iterator.
DataChunk.Split<DoublePoint,DoubleDataChunk>	splitAt(int splitIndex)	Split the chunk in two parts.
Stream<DoublePoint>	stream(TimeSeriesIndex index)	Get a point stream.
DoubleDataChunk	tryToCompress()	Try to compress the chunk.
protected void	writeStepValuesJson(com.fasterxml.jackson.core.JsonGenerator generator)

Methods inherited from class com.powsybl.timeseries.AbstractCompressedDataChunk

getCompressionFactor, getLength, getOffset, getStepLengths, getUncompressedLength, isCompressed, toJson, writeJson

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.powsybl.timeseries.DataChunk

getCompressionFactor, getLength, getOffset, isCompressed, toJson, writeJson

Constructor Details

CompressedDoubleDataChunk

public CompressedDoubleDataChunk(int offset,
 int uncompressedLength,
 double[] stepValues,
 int[] stepLengths)

Method Details

getStepValues

public double[] getStepValues()

getEstimatedSize

public int getEstimatedSize()

Description copied from interface: DataChunk

Get estimated size in bytes.

Specified by:

getEstimatedSize in interface DataChunk<DoublePoint,DoubleDataChunk>

Specified by:

getEstimatedSize in class AbstractCompressedDataChunk

Returns:

estimated size in bytes

getUncompressedEstimatedSize

protected int getUncompressedEstimatedSize()

Specified by:

getUncompressedEstimatedSize in class AbstractCompressedDataChunk

getDataType

public TimeSeriesDataType getDataType()

Description copied from interface: DataChunk

Get data type.

Specified by:

getDataType in interface DataChunk<DoublePoint,DoubleDataChunk>

Returns:

the data type

fillBuffer

public void fillBuffer(DoubleBuffer buffer,
 int timeSeriesOffset)

Specified by:

fillBuffer in interface DoubleDataChunk

fillBuffer

public void fillBuffer(BigDoubleBuffer buffer,
 long timeSeriesOffset)

Specified by:

fillBuffer in interface DoubleDataChunk

iterator

public Iterator<DoublePoint> iterator(TimeSeriesIndex index)

Description copied from interface: DataChunk

Get a point iterator.

Specified by:

iterator in interface DataChunk<DoublePoint,DoubleDataChunk>

Parameters:

index - the time series index

Returns:

a point iterator

stream

public Stream<DoublePoint> stream(TimeSeriesIndex index)

Description copied from interface: DataChunk

Get a point stream.

Specified by:

stream in interface DataChunk<DoublePoint,DoubleDataChunk>

Parameters:

index - the time series index

Returns:

a point stream

tryToCompress

public DoubleDataChunk tryToCompress()

Description copied from interface: DataChunk

Try to compress the chunk.

Specified by:

tryToCompress in interface DataChunk<DoublePoint,DoubleDataChunk>

Returns:

the compressed chunk or itself if compression is not efficient enough

splitAt

public DataChunk.Split<DoublePoint,DoubleDataChunk> splitAt(int splitIndex)

Description copied from interface: DataChunk

Split the chunk in two parts.

Specified by:

splitAt in interface DataChunk<DoublePoint,DoubleDataChunk>

Parameters:

splitIndex - the split index

Returns:

both chunks

append

public DoubleDataChunk append(DoubleDataChunk otherChunk)

Description copied from interface: DataChunk

Append the chunk with the one given in argument, and return the result. "This" dataChunk and the one in argument remain unchanged. The two chunks have to be successive, i.e : this.getOffset() + this.length() = otherChunk.getOffset()

Specified by:

append in interface DataChunk<DoublePoint,DoubleDataChunk>

Parameters:

otherChunk - : the chunk to append with this object. It has to be the same implementation as this object.

Returns:

writeStepValuesJson

protected void writeStepValuesJson(com.fasterxml.jackson.core.JsonGenerator generator)
                            throws IOException

Specified by:

writeStepValuesJson in class AbstractCompressedDataChunk

Throws:

IOException

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object